1. ITU-T Recommendation Z.100.: Specification and Description Language SDL (2002)
2. ISO: Information Processing Systems - Open Systems Interconnection - LOTOS - A Formal Description Technique Based on the Temporal Ordering of Observational Behaviour, IS 8807 (2006)
3. Jaragh, M., Saleh, K.A.: Protocols Modeling Using the Unified Modeling Language. In: Proceedings of IEEE Region 10 International Conference, Singapore (2001)
4. Pärssinen, J.: Turunen.M.: Patterns for Protocol System Architecture. In: Proceedings of the 7th Conference on Pattern Languages of Programs, Illinois, USA (2000)
5. Gotzhein, R.: Consolidating and Applying the SDL-pattern approach: A Detailed Case Study. In: Information and Software Technology, vol. 45 -11. Elsevier Sciences, Amsterdam (2003)